:root {
            
            --theme: black;
            --theme-dark: #000000;
            --bg: #FFFBEA;
            --text: #222;
        }
        

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Poppins", Arial, sans-serif;
        }

        body {
            background: var(--bg);
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100dvh;
            overflow: hidden;
        }

        .phone-frame {
            background: #fff;
            width: 90vw;
            max-width: 420px;
            height: 100%;
            max-height: calc(90vw * 16 / 9);
            display: flex;
            flex-direction: column;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.12);
            overflow: hidden;
            position: relative;
        }

        .content-area {
            flex: 1;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            scrollbar-width: none;
            padding-bottom: 60px;
        }

        .content-area::-webkit-scrollbar {
            display: none;
        }

        nav {
            background: #fff;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            padding: 10px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            z-index: 100;
        }

        nav .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        nav .logo img {
            width: 40px;
            height: 40px;
            border-radius: 10px;
        }

        nav .logo span {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--theme-dark);
        }

        .menu-toggle {
            display: flex;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
            border: none;
            background: transparent;
        }

        .menu-toggle span {
            background: var(--theme-dark);
            height: 3px;
            width: 25px;
            border-radius: 5px;
            transition: all 0.3s ease;
        }

        nav ul {
            list-style: none;
            display: none;
            position: absolute;
            top: 65px;
            right: 10px;
            background: #fff;
            flex-direction: column;
            width: 190px;
            padding: 10px;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
            border-radius: 10px;
            animation: fadeIn 0.3s ease;
            z-index: 99;
        }

        nav ul.show {
            display: flex;
        }

        nav ul li a {
            text-decoration: none;
            color: var(--theme-dark);
            font-weight: 600;
            padding: 8px 10px;
            border-radius: 8px;
            display: block;
            transition: background 0.3s ease;
            font-size: 0.9rem;
        }

        nav ul li a:hover {
            background: var(--theme);
            color: black;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .box {
            max-width: 90%;
            margin: 20px auto;
            background: #fff;
            border-radius: 20px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
            text-align: center;
            padding: 25px 20px;
            animation: fadeIn 0.8s ease;
        }

        .box img {
            width: 100px;
            border-radius: 22px;
            margin-bottom: 15px;
        }

        h1 {
            font-size: 1.4rem;
            color: var(--theme-dark);
            margin-bottom: 10px;
        }

        p {
            font-size: 0.9rem;
            color: #555;
            margin-bottom: 20px;
            line-height: 1.5;
        }

        .button-group {
            display: flex;
            justify-content: center;
            gap: 15px;
        }

        .btn {
            flex: 1;
            background: var(--theme);
            color: white;
            padding: 10px 0;
            border: none;
            border-radius: 10px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            box-shadow: 0 4px 10px rgba(255, 193, 7, 0.4);
        }

        .btn.secondary {
            background: #fff;
            color: var(--theme-dark);
            border: 1px solid var(--theme);
            box-shadow: none;
        }

        .btn:hover {
            background: var(--theme-dark);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn.secondary:hover {
            background: var(--theme);
            color: #fff;
        }

        .content {
            background: #fff;
            margin: 10px;
            padding: 20px;
            border-radius: 16px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
        }

        .content h2,
        .content h3 {
            color: var(--theme-dark);
            border-bottom: 2px solid #FFE9A7;
            padding-bottom: 6px;
            margin-bottom: 10px;
            font-size: 1.05rem;
        }

        ul {
            padding-left: 18px;
        }

        ul li {
            margin-bottom: 8px;
            font-size: 0.9rem;
        }

        ol {
            padding-left: 18px;
            margin-bottom: 10px;
        }

        ol li {
            margin-bottom: 8px;
            font-size: 0.9rem;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 15px;
            font-size: 0.88rem;
        }

        th,
        td {
            border: 1px solid #FFE2A0;
            padding: 8px;
            text-align: left;
        }

        th {
            background: var(--theme);
            color: #fff;
        }

        tr:nth-child(even) {
            background: #FFF8DC;
        }

        .note {
            font-size: 0.78rem;
            color: #777;
            margin-top: 8px;
        }

        footer {
            background: #fff;
            text-align: center;
            font-size: 0.78rem;
            color: #777;
            padding: 12px;
            border-top: 1px solid #eee;
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            z-index: 50;
            line-height: 1.4;
        }

        footer a {
            color: var(--theme);
            text-decoration: none;
            font-weight: 600;
        }

        @media (max-width: 480px) {
            body {
                background: var(--bg);
                height: 100dvh;
            }

            .phone-frame {
                width: 100%;
                max-width: none;
                border-radius: 0;
                box-shadow: none;
                max-height: none;
            }
        }

        a {
            color: var(--theme);
            font-weight: 600;
            text-decoration: none;
        }

        a:hover {
            color: var(--theme-dark);
            text-decoration: underline;
        }